In the Senate Estimates this week, what did the senators ask about data retention that got the Attorney-General's Department so riled up? Why exactly did Microsoft price the Surface in Australia without the "Australia Tax"? And will we ever replace our cash economy with our mobile phones?

Suzanne Tindal heads up a team of keen ZDNetters, including journalists Luke Hopewell, Josh Taylor and Michael Lee. You can follow them all on Twitter: @engochick, @joshgnosis, @lukehopewell, @mukimu. Happy listening!